Bobbin-stripper.



B. PETERSON. BOBBIN STBIRPER.

APPLICATION FILED MAY 29,1916- Patented Apr. 8,1919l 2 $HEETSSHEET l.

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B. A. PETERSON.

- sosem STRIPPER.

I APPLICATION FILED MAY 29; 1915- I I 1,300,004. "Patented Apr. 8, 1919.

F.' IC ..6. al' mlll 47 Wnesses;

m: mm", rrrzns mmomummL-Awmc n a V UNITED S A LUTHER L, M L R, AND HARRY,

F' EN OFFICE- 1 BURT A. rnri nson; or som Inmnors, kssienoit To HOWARD" n. oo;1u1yu 1t;

A. sEvERsoN, corARTNERs DOING BUSINESS AS AeBnepoL /mit ooMrnNY, ornooxronn, IL I OIS.

nonnm-smrrrne;

To all "whom it may concern;

Rockford, in the county of -Winneb ago and State of- Illinois, have invented certain; 118W and useful Improvements in Bobbin- Stription. e i

- The object of this inventionfi's to provide from bobbins. l,

improved means "tor strippingiwaste yarn r; arearranged around the opening 5%. The

"In the accompanying draWings,"- Fig'ure 1 is a side elevation of a bobbin stripper 'GIIlbodying the features otmyi'nvention." Fig. I

2 isan enla'rg z;ed sectionalvie'vi taken in the plane of dotted line .2.-'-2"'0 f Fig. 1. 1 Fig. v8 is a fragmental' upper? side View. Fig. 3 is a fragmental View of certain parts *sho-wn in tional Vi'ewtaken in the plane ofdottefd line 55 of Figs; 1 and 6. Fig. 6is aview; taken in the plane of dotted line 6 ofFig 5.: Fig.

'- 7 is a detailviewofone of the stripping ele men'ts'.

ZThe inventioirv is susceptible of "embodimeht in bobbin strippers Which are entirely means for turning the disk '8 in the direc independent, in structure and source of power, of any-*other machine, but for c011 venience in operation the bobbin stripper may, if desired be associated 'with'fa winder for rewinding 'y'arnffrom tailings bobbins,

0 meansof a link 15 to one arm of a bell-crank I that is to say,- bobbins Which'ithasbeen inr practicable to unwind fully in an automatic Winder of the'ty-pe-show'n, forjfexample', in Patent No. 1,175,710, dated March 1 1', 11916.- Whiletending such a tailings winder the operator may in; spare time operate-the bob-- bin stripper to remove frolnjbobbins yarn which it is 'impracti cable? to unwind on the 1 P the bobbin through the diaphragm. In]

tailings machine. I

The bobb'n stripperconiprises stripping p D ger are arranged to be reciprocated bypower derived from a constantly-.rotatlng shaft 21" elements arranged to embrace a bobbin just above the butt thereof, and meansto produce Y force the bobbin through the space' between the stripping elements whereby to strip the? bodiment the stripping elem'en's' 'arere l a mounted on said shaftand yieldlngly driven tiVely stationary,- and 1 means is provided to yarn from the bobbin. 'Tn 'the=construction selected for illustration; 'thestripping elements partake ofdthe "general-form of an iri's diaphragm, beingcontractlbleto closely pers, of which the followingis'inspecifica a stationary plate or Web 5.1 The plate 5 opening 5.

Patented 8, 1 91 9.

. mate thebodj 61 the bobbinso s to de tain theaste yarn as the bobbin is forced through the diaphragm. a.

Th'e iris diaphragm. comprises six stripplnglelements or blades 2 (Figs. 5 and 7), each pI'QVldBd at one.end"with a pivot 3' which is mounted in a bearing i (Fig.6) in has an openingfi therein. The bearings 4L areequld stantly spaced from each other and opposite end ofeach blade 2 is provided With a p vot 6 which is mounted Within a radial slot 7; in a, diskS, said disk having a central openlng 8LWhiQh is alined with the Thedisk 8 is supportedby 5a,

tubularv hub 9 which is rotatably mounted in; a bearing 10. It 'Will be seen that .When

thegdisk- 8 is oscillated,'the stripping blades 2 will be swung to pn'large ordiminish the space between them; =C0acting. stop shoulders 2 on the blades 2 limit the inward or ingupon aflpin' 12 fixed to said disk. .The

tion to expand the iris diaphragm comprises a; bellcrank lever 13- pivoted at 14, one I arm of said'be'll-crank lever underlying the pin 12 and the other end being connected, by

lever 16 which is pivoted at 17 to the sup-,

porting frame; The "supporting frame comthe present. embodiment said bar and, plnnof the tailings Winder. The operative connection between the shaft 21 and the -bobb'1n-.

stripper. zcornprlses a pinion 2'2 rotatably by a springpressed clutch member 19? splined :to the shaft. Thepinion 22 is ar-v ranged to mesh alternately with two opposed racks 23 and 24: formed uponthebar 19 a and the plunger 20, respectively. In

order -that ithe racks may be alternately, h 21:-

. through a link 31.

ing the bell-crank 26 comprises a treadle 30 connected to the said bell-crank lever The bar 19 and the plunger 20 are secured together in parallel relation by means of rivets 32 and 33 which are integral with spacing members 34- and 35, respectively. Said bar and plunger are mounted for sliding mov ement in a guide 36, (Figs. 1 and 4). At the up er end of the rack 23 is a blank space 37, and at the lower end of the rack 24 is a blank space 38. Downward movement of the bar 19 and plunger 20 is limited by contact of the spacing member 3 1 with a stol'a bracket 36 secured to the guide 36.

. -When'the parts 34 and 36* are in contact,

' inovably secured a head 42 having a rounded the blank space 37 is opposite the pinion 22.

Normally the stop 29 is in contact with the bell-'craiiklever 26, and the pinion 22 is out of mesh with the rack 28 and is opposite the blank space 38. To contract the iris diaphragm andforce the bobbin through the diaphragm the operator depresses the treadl'e 30, thereby moving the rack 23 into mesh with the pinion22. v

The bell-crank lever. 16 carries an antifriction roller 39 which is arranged to roll in contact with the upper end portion of the b'a'r 19. -Opposite the roller 39 isja roller 40 on the bed 18 to support the bar 19 against the thrust of the roller 39. There is a notch 4:1 (Fig. 3) in the bar 19 in which th'eroller 39 may lie for a purpose to be described here'inafter. V g

To the lower end of the plunger 20 is re stud 43 arranged to enter the recess in the tip "end of the bobbin,- an annular shoulder 44'arr'a'11ged to bear-against the end ofthe bobbin, and a cylindrical portion -415 of less diameter than the tip of the bobbin. The

head 42 shown in the drawing may be removed and replaced by another head of suitable length and form properly to engage a bobbin of different length or shape from the one herein illustrated- Inthe plate 5 is formed an upwardly.- flaring annular recess 46 to receive the yarn stripped from the bobbin.

Above the iris diaphragm is a guide. 17 to rece'ive a bobbin to be stripped. At the inner side of saidguide are two flanges 4-8 (Fig, 2) arranged to support the bobbinin approximatel axial 'ali-nement with the diap'hragm. To support the bobbin against longitudinal movement prior to the descent of the plunger, I provide a detent 49 (Figs. 1 and 2) which is fixed to a rock shaft 50 and which is yieldingly held in operative position by means of a coiled spring 51 acting upon a crank-arm 52 fixed to said shaft. 53 is a stop-pin with which the crank arm norma-lly lies in contact.

- At the forwardside of the lower end of the guide 47 is a wall 5& coacting with the remainder of the guide to form a socket into which the butt-end of the bobbin is inserted by the operative.

To prevent the yarn from clinging to and ascendingwith the plunger, I provide two stripper springs (Figs. 2 and 6) lying at oppositefsides of the path. of movement of the bobbinand just above the recess 46.

Assuming the parts to be in the position shown in Fig. 1, the operation is as follows: The operative places a bobbin in the guide 47 with the butt of the bobbin lying behind the wall 54. The operative then depresses the treadle 30 thereby rocking the bed 18 so as to place the rack 23 in mesh with the pinion 22. The plunger 20 then descends, forcing the bobbin .past the detent 49. By the timev the butt of the bobbin has passed through the iris diaphragm, the upper end of the bar 19 has passed the roller 39, whereupon the spring 11 contracts the diaphragm lnto engagement with the bobbin just above tent permitted by the stop shoulders Lf. The.

bobbin drops into a suitable receptacle not shown) as soon as it has passedthe ,dia-

phragm, unless there should be frictional en-.

gagement between the stud 43 and the bobbin, in which event the bobbin will be stripped from the stud 43 by the diaphragm when the plunger begins to ascend. The waste yarn falls through the diaphragm and through the tubular hub 9, or is pushed the'rethrough by the next succeeding bobbin. When the downward stroke of the plunger is completed, the blank space 37 is opposite the pinion 22. When the operative releases the treadle'30, the bed 18 rocks to carry the stud 29 into contact with the bell-crank lever 26, whereby the upper end of the rack 24L is placed in mesh withthe-pinion 22. Thebar 19 and the plunger 20 are. then returned to their normalv upper position. When the upper end of the bar19 strikes the roller 39, the bel'l crank lever 16 .is turned to enlarge the iris diaphragm. When the blank space 38 arrives opposite the pinion 22, the roller 39 moves into the notch 41 in the bar 19 under the action of the spring 11 operating through the bell-crank lever 13 and the link 15. i The I'Oll61i39' lying within the notch .41 holds the bar 19 and-the plunger 20 upso that the lowermost tooth of the rack 24 is clear of the constantly-rotating pinion 22.

If excessive resistance shouldbe encountercd by the plunger 20 in its descent, breakage is avoided through slippage of thepinion -22-011 the shaftZl, the clutchmember 19* yielding to allow theshaftto rotate. with re lation to the pinion. i e

The guide 47 is ofisuch limited width as p to prevent the operative from inserting bobbnis carry1nga much- .larger yarn load than itis intended shall be removed by stripping.

The dimensions of the guidealso are such as" to prevent the operative from placing her ha nd "in the path of movement of the plun- I would have it understood that theinvention is not limited to the eonstruetlon herein shown, the present embodiment being -suscepti'ble o'f considerable,,modificatlon within the scope of the appended claims. v

I claim as my invention:

1. A bobbin stripper having, in combination, a bobbin guide; an eXpansible and contractible annular stripping device at one end of the guide; a yieldable detent located in the path of a bobbin about to enter said device; a plunger for forcing the bobbin past the detent and through said annular device; and a yieldable member located adjacent to the detent and arranged to bear against thev side of the bobbin and the plunger to prevent the yarn from clinging to the plunger.

2. A bobbin stripper having, in combination, a pivoted bed, a stripping element mounted on the bed, a plunger gnided for reciprocation upon the bed for pushing a bobbin past the stripping element,- twoopposed racks attached to the plunger, a constantly rotating shaft, a pinion mounted on said shaft between the racks, and means for pivotally moving the bed to place the racks alternately in mesh with the pinion.

3. A bobbin stripper having, in combination, a supporting frame; a strippingelement on the frame; means to move the stripping element into engagement with a bobbin; a lever pivoted on the frame;=-cor'ine'ctions from the lever to the stripping element for moving the latter out of position to engage a bobbin; a plunger for forcing a bobbin past the stripping element two opposed rack bars attached to the plunger; a

constantly rotating shaft; a pinion inounted on said shaft between the rack bars; and means to cause the rackbars to mesh alternately with the pinion, said lever bearing against one of said rack bars, the last-men tioned rack bar moving out of engagement with said lever when the-butt of the bobbin has passed through said annular device.

4. A bobbin stripper having, in combina- 7 tion, a plate having an opening therethrou'gh; a disk havinga central opening;

a tubular hub pivotally supporting said disk; said openings and hub'ibeing axially alined; an eXpansib-le and contractible "annular dc viizeylocated between said plate and disk'a nd' comprising'blades pivoted on said plate and movable by said diskymeans for oscillating? the disk; and meansfor movinga bobb'iri" through said openingsfand hub,

A bobbin stripper having, in combinat1on,1a stripping element, stationary means for supporting a bobbin at 'OIIGSldGOffthE stripping element with the butt of .the'-bOb'-" bin extending toward the stripping elemend means for forcing the bobbin off said fsupw t e porting means and 'toxthe other side 0 stripping element, and means for moving the strippingelement into engagement-with the bobbin after the butt of the bobbin has".

, .& 3 25', 6; A; bobbin stripper having, ln-"combinw: tion, a bobbin guide, an expansible andTcbn-T passed the stripping elementp tractible annular stripping device at one end of :the guide, a yieldablle detentlocate'd -in thepath of a bobbin about to enter said device, a plunger for forcing the bobbin past the detent and through said annular device,

and means for contracting said device into contact with the bobbin immediately after the butt of the bobbin has passed through said device.

7. A bobbin stripper having, in combination, a member having an opening therethrough, a plurality ofstrippingblades pivoted about said opening, a disk having an opening alined with the first mentioned opening, said disk having slots therein, said blades having studs lying in the slots, means for oscillating the disk'to move the blades toward and away from the axis of said opennular device, a spring for contractingthe device into engagement with a bobbin, means for moving a bobbin through the device, and means for releasing the spring to action after the butt of the bobbin has passed through the device.

' 10. A b bbin stripper having, in combination, an expansible and, contractible annular device, a spring tending to contract the de- V106, a lever arranged to enlarge the device,

a plunger for pushing a bobbin through the device, and a meinber'moving with the plunger and arranged to operatesaid lever.

, v 112 A, bobbin stripper having, in combination, a bobbin guide, a stripping device, a plunger having a forward end portion of less diameter than the tip of a bobbin and having a. stud adapted to enter the recess in thetip of a bobbin ,-mean s for actuating the plunger to push a bobbin past the stripping device; and spring-actuated means for moving the stripping device into contact with a bobbin, the stripping device moving into contact with thereduced end portion of the plunger when the bobbin has passed the stripping device, said device serving to strip the bobbin from said stud upon the return movement ofv the plunger.

:12. A bobbin stripper having, in combination", a stationary inclined bobbin guide; a stripping device at the lower end of the guide a yildable detent located in the path of the bobbin above said device; and a plunger for forcing the bobbin ofi the guide and past the detent and the stripping device.

13. A bobbin stripper having, in combination, a plate having an opening therethrougli; a pivoted disk having a central opening; said openings being axially alined; an eXpansible and contractible annular device located between said plate and disk and comprising blades pivoted on said plate and movable by said disk; means for oscillating the disk; and means. for moving a bobbin through said openings.

14. A bobbin stripper having, in combination, a stationary bobbin guide, an expansible and contractible annular stripping device at one end of the guide, a plunger for forcing the bobbin off said guide and through said annular device, and means for contracting said device into contact with the bobbin immediately after the butt of the bobbin has passed through said device.

In testimony whereof I have hereunto set my hand.

BURT A. PETERSON.

Copiesof this patent may be obtained for five cents each, by addressing the Commissioner of Patent-s,

Washixigton,-D.O. 

